Boat



Patented Aug. 1, 1925.

CHARLES R. TWITCHELL, 0F LOS ANGELES, CALIFORNIA.

BOAT.

Application filed September 28, 1921.

T0 all 107mm t 'may concern: y

Be it known that l, CHARLES R. Twrror-r- ELL, a citizen of the United States, residing at Los Angeles, in the county ot Los Angeles and State oi California, have invented new and useful Improvements in Boats, of which the following is a specification.

rThis invention relates to a boat, and particularly pertains to a sectional boat oit the row-boat or shift type.

An object of this invention is to provide a sectionalvboat which may be readily set up and knocked down, and embodying a connection for separable parts which is so constructed as Vto "form a strong and watertight joint.

Another object is to provide a boat having transversely separable sections formed ot sheet metal adapted to be detachably connected together in which the sheet metal ot the sections is so formed as to form rcintorcements to produce a structure of considerable strength and light in weight.

A further object is to provide an e'liective means t r adjoining adjacent sections which will insure against leakage at the joint and also afford a transverse reinforcement to the structure.

Other objects will appear hereinafter.

rThe invention is illustrated in the accon'ipanying drawings, in which:

Figure 1 is a plan view ota boat constructed in accordance with this invention, showing it as assembled. Y

Figure 2 is a si le view ot same with parts broken away.

Figure 3 is a view in cross section as seen on the line 3-3 of Figure 1.

Figure 1- is a detail in cross section as seen on the line of Figure 1.

Figure 5 is a detail in section as seen on the line 5--5 of Figure 3.

Figure 6 is a detail in perspective, illustrating the separable connections between the adjacent sections as formed at the rail ot the boat showing them in a separated position.

vlligure 7 is a detail in section and perspective ot a gasket tor sealing the joint.

Figure 8 is a detail in section showing the manner of forming the joint between the bottom and side portions of the boat.

The invention is here shown as applied to a row-boat ot the dat bottom. double prow type, and divided transversely inter-l tfiediaize its ends into' tivo li'iill sections Serial No. 503,956.

and B, each ot which embodies a bottom panel 1() and side panels 11 and 12. The bottom panel is formed straight across one end and has its side edges converging to a point, and the side panels 11 and 12 are connected to the converging edges of the bottom panel at a slight inclination and eX- tend from the straight end of the bottom panel to their intersection in the prow.

As a means for reinforcing the bottoni panel longitudinally, the sheet metal of which it is formed is pressed to form ribs 13, and to 'further strengthen the structure and at the saine time afford a water tight joint between the side panel and the bottomV ot the side and bottom panels to serve as a reintorcement, The upper edges ot the side panels arc turned outwardly and then inwardly to 'Form hollow or tubular rails 17 which are sealed: the open ends of the tubular rails being closed by blocks or plugs 18 and 19` as particularly shown in Figure 5. The tubular rails constitute air compartients which serve to give sulticient buoyaney to the boat to prevent its sinking in event itl becomes filled with water.

rllhe inner end portion ot' one of the hull sections is formed `sufliciently larger than the inner end portion ot the other hull section, so that when the two sections are placed end for end in their assembled position, the end of one section will overlap the end of the othery section. To permit the end ot the tubular rail 17 on one' section to telescope the rail on the adjacent section the lower portion of the outermost rail is removed, as indicated at 20 in Figure 6; the upper portion of the rail forming a fla-nge 21 adapted to extend over the upper portion of the adjacent rail, which flange is formed with an opening 22 adapted to register with a corresponding opening 23 on the inner rail` through which a screw 24 may be passen and engaged. with the; bloeit 18, as shown in Figure 5. For similar reasons the end portionsot` the double seamed joints 1l are cut away on the smaller hull section to permit it to telescope the larger section. The overlapping portions of the bottom and side panels are formed with registering openings and 26 through which machine screws 27 may be passed and screwed into engagement with a demounte able clamping strip 28, which strip pre erably comprises a single piece formed to extend transversely across the bottom vpanel and up the inner face of the side panels over the tubular rails, and is formed with threaded openings to register with the openings 25-25 and with unthreaded openings registering with the openings 22-23.

As a means for Vtightly sealing the joint between the overlapping portions oi' the boat section, a gasket 30 is employed which is preferably constructed as illustrated in Figure' 7, and comprises a flattened rubber tube 31 adapted to `extend throughout the length` of the joint and formed with openings 32through which the screws may pass.

In assembling the boat, the sections A and B are placed end to end, as shown in Figure 1, with adjacent endA portions overlapping and with the gasket- 30 interposed between the overlapping portions. The strip 28 is then `set in placeand the machine screws'27 inserted through the registering openings 25e-26'and 22,23 and screwed into engagement with the threaded openings, as shown in Figure 4, thus securelyV fastening' adjacent ends of the boat sections together. Thescrews 2l pass through openings in the end portion oi' the strip and screw into engagement with the plug 18, as shown in Figure 5, to securely fasten the ends oi' adjacent tubular rails together.

From the foregoing it will be seen that I have provided a ysectional boat which may be readily assembled or taken apart, and in which the parts when separated may be meshed together to form a compact package convenient for transportation and storage, and which when assembled will form a structure of great strength and lightness;

the ribs` 13, seam let and rails 17 serving to strengthen the boat against longitudinal bending and the clamp strip 28 acting to strengthen the hull transversely.

While I have shown and described a speciic en'ibodiment of my invention, I do not limit myself to the exact details of construction shown, but may employ such chan-ges in construction and modiication of parts as come within the scope of the appended claims.

I claim:

1. In a sectional boat, a plurality of hull sections, each embodying side panels, a tubular rail formed on the upper edges of the side panel forming air chambers, the panels oi adjacent sections being adapted to overlap each other, the tubular rails of one ot the sections being cut away to receive the ends of the rails oi the adjacent section and having portions adapted to overlap the adjacent rails, and means for detachably connecting the overlapped portions of the rails together.

2. In a sectional boat, a plurality of hull sections, eachV embodying side panels, a tubular rail formed on the upper edges of the side panel 'tormiug air chambers, the panels ot adjacent sections being adapted to overlap each other, the tubular rails of one of the sections being cut away to receive the ends ot the rails oi' the adjacent section and having Yportions adapted to overlap the adjacent rails, the overlapped por- Y tions oi said rails formed with openings, blocks in the innermost rails opposite the openings, andscrews insertable through said openings and engageable with said blocks for connecting said rails together.

A sectional boat comprising a plurality oi telescoping metal hull sections having bottom and side panels assembled with interlocking double turned joints; the upper edges ot' said side panels turned to form an air chamber gunwale; and means for making water tight connections between said seC- tions; said oints and said rails being adapted orlongitudinally reinforcing said sections.

fl. In a sectional boat a plurality of sheet metal hull sections adapted to be detachably secured together said sections comprising a flat corrugated bottom plate and a pair of side panels secured to said bottom plate, the upper edge of each of said side panels turned to form an air chamber gunwale.

CHARLES R. TIVITCHELL. 

